It appears that a 2-pound piece of a de-orbiting “cargo pallet” from ISS bored through the roof of a house in Florida on March 8, 2024 and broke through two floors.
A Nest home security camera captured the sound of the crash at 2:34 pm local time (19:34 UTC) on March 8. That’s an important piece of information because it is a close match for the time—2:29 pm EST (19:29 UTC)—that US Space Command recorded the reentry of a piece of space debris from the space station. At that time, the object was on a path over the Gulf of Mexico, heading toward southwest Florida.
This space junk consisted of depleted batteries from the ISS, attached to a cargo pallet that was originally supposed to come back to Earth in a controlled manner. But a series of delays meant this cargo pallet missed its ride back to Earth, so NASA jettisoned the batteries from the space station in 2021 to head for an unguided reentry.
NASA had taken possession of the piece to determine for certain if it is from ISS. Who is liable for the damages could become a legal tangle. The depleted batteries were owned by NASA, but were brought to ISS on a Japanese HTV cargo freighter. According to the Outer Space Treaty, the nation that launches an item is liable for any damages it causes when it crashes back on Earth. The language however doesn’t really cover a case where one nation builds the item for launch, and another nation launches it.
The owner, Alejandro Otero, had to use Twitter to get a response from NASA. According to his tweet, he had called and emailed the agency and had been ignored. Only after other news sources picked up the story did NASA respond. Furthermore, when NASA jettisoned the pallet from ISS it had insisted that the discarded batteries would burn up entirely in the atmosphere, even though other experts said differently.
The Aerospace Corporation, a federally funded research and development center, says a “general rule of thumb” is that 20 to 40 percent of the mass of a large object will reach the ground. The exact percentage depends on the design of the object, but these nickel-hydrogen batteries were made of metals with relatively high density. Ahead of the reentry, the European Space Agency also acknowledged some fragments from the battery pallet may survive to the ground.
What this information tells us is that NASA knew this discarded pallet posed a risk, but made believe it didn’t.